# RFD900 (SiK) Telemetry Radio

[jDrones](http://store.jdrones.com) and [RFDesign](http://rfdesign.com.au/) offer _long-range_ [SiK]()-compatible telemetry radios. The radios provide reliable connectivity at greater than 5km ranges with normal antennas (and have been reported to achieve much greater ranges).

![jDrones Long Range Telemetry](https://4155462212-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LArEa7z2SPawfl3HpCD%2Fuploads%2Fgit-blob-79b62653bb549f3cb886489a72546f96f43575cf%2Fjdrones_long_range_uav_telemetry_rf900set02_2.jpg?alt=media)

:::tip _jDrones_ have productized _RFDesign_ modems (added a casing with power management, filtering and other electronics inside, along with cables to connect to popular flight controllers, and individually validated antennas). The first such modem was the _RFD900_, but both _RFDesign_ and _jDrones_ have since iterated to new versions. :::

The _jDrones_ radios have a JST-GH connector, and come with cables for: _JST-GH to JST-GH_ and _JST-GH to DF-13_. They can therefore be used in a "plug-n-play" way with most [Pixhawk Series](../../../flight_controller/pixhawk_series) controllers (you might have to change/use an appropriate connector for some "non-standard" boards).

There are a number of versions available:

* [jD-RF900Plus Longrange (900Mhz)](http://store.jdrones.com/jD_RD900Plus_Telemetry_Bundle_p/rf900set02.htm) (USA)
* [jD-RF868Plus Longrange (868Mhz)](http://store.jdrones.com/jD_RD868Plus_Telemetry_Bundle_p/rf868set02.htm) (Europe)
* [store.rfdesign.com.au](https://store.rfdesign.com.au/radio-modems/):
  * [RFD 900+ Modem](https://store.rfdesign.com.au/rfd-900p-modem/)
  * [RFD 868x Modem (EU)](https://store.rfdesign.com.au/rfd868x-eu-hs-8517-62-00-90/)
  * [RFD900x](https://store.rfdesign.com.au/rfd-900x-modem-hs-8517-62-00-90/)
